Deal found on September 18, 2026
Denver to Philadelphia
$122$30560% off
Round trip
Denver to Philly on Frontier is $122 right now, versus the roughly $498 this route usually costs, one of the steepest drops we have tracked on this pairing. Dates are wide open over the coming months, giving you time for Philly's museums, cheesesteaks, and easy train access to NYC or DC. It is part of the same Frontier fare sale knocking prices down system wide today.
Travel dates
Dates in December
e.g. Dec 5 – Dec 14 · 9 nights
Date options
3 at this price
Lowest we've seen
$58
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